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The 'best' conditions for doing this is when you have two angles... add them together and the difference between their total and 180 degrees is the magnitude of the remaining angle.
Otherwise, if you have one angle and the lengths of two sides you can use the sine rule.
This states that the length of each side, divided by the sine of the angle opposite it, is equal to the length of any other side, divided by the sine of the angle opposite it - or.....
a/sin A = b/sin B = c/sin C
Or, if you don't have a matching angle and side, you can use the cosine rule.
This says that
a2 = b2 + c2 - 2bc cosA
Now you have an angle and the side opposite it, and you can use the sine rule above.
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What is the measure of the missing angles if the two angles are 62 and 64?
That will depend on the shape but if it's a triangle then the missing angle is 54 because there are 180 degrees in a triangle.
What is the measure of the missing angles of a triangle if one angle measures 34 degrees?
The two missing angles add up to 146 degrees. There's no way to tell what each of them is. In fact, any two angles that add to 146 can be used to construct a fine triangle.
How do you find the missing angle of a triangle if you are given two of the angles?
180 minus two known angles = unknown angle
What is the missing angle of a triangle of 35degree's and 25degree's?
The sum of the angles in a triangle add up to 180. So in this case 180-35-25=120. The missing angle in this problem is 120 degrees.
Two angles of a triangle measure seventy four degrees and forty one degrees. What is the measure of the missing angle?
Since the sum of the internal angles of a plane triangle is 180 degrees, the measure of the missing angle is 65 degrees. 180 - 74 - 41 = 65 degrees.
